Dengue lgG and lgM tests are serological assays used to diagnose Dengue fever, a mosquito-borne viral infection. lgM antibodies are the first to appear, typically becoming detectable 3 to 5 days after the onset of iliness. A positive lgM result indicates a recent or acute dengue infection.

lgG antibodies appear later, usually after a week, and persist for life. A positive lgG result suggests past exposure to the virus. In primary infections, lgM is prominent, while secondary infections often show a rapid rise in lgG with lower lgM levels. Distinguishing between primary and secondary infections is clinically important, as secondary infection carries a higher risk of severe complications like Dengue Hemorrhagic Fever. These tests are often performed using rapid diagnostic kits, providing crucial Information for patient management and outbreak surveillance.

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